<template>
  <div class="wrapper">
      <swiper ref="mySwiper" :options="swiperOptions">
      <swiper-slide v-for="(item, index) in pages" :key="index">
        <div class="icon" v-for="(item,index) in pages[index]" :key="index">
            <div class="icon-img">
                <img class="icon-img-content" :src="item.imgUrl" />
            </div>
            <p class="icon-desc">{{item.desc}}</p>
        </div>
      </swiper-slide>
      <div class="swiper-pagination" slot="pagination"></div>
      </swiper>
  </div>
</template>

<script>
export default {
  name: 'HomeIcons',
  props: {
    iconList: {
      type: Array
    }
  },
  data () {
    return {
      swiperOptions: {
        spaceBetween: 0, //  轮播图之间是否有空白
        pagination: {
          el: '.swiper-pagination',
          clickable: true
        }
      }
    }
  },
  computed: {
    // 对iconList进行分页处理，形成一个二维数组
    pages () {
      const pages = []
      this.iconList.forEach((item, index) => {
        const page = Math.floor(index / 8)
        if (!pages[page]) {
          pages[page] = []
        }
        pages[page].push(item)
      })
      return pages
    }
  }
}
</script>

<style lang="stylus" scope>
@import '~styles/varibles.styl'
@import '~styles/mixins.styl'
  .wrapper
   background: #F0FFF0
   overflow: hidden
   width: 100%
   height: 0
   padding-bottom: 50%
   .icon
    position: relative
    width: 25%
    float: left
    height: 0
    padding-bottom: 25%
    .icon-desc
     position: absolute
     left: 0
     right: 0
     bottom: 0
     height: .44rem
     line-height: .44rem
     color: $darkTextColor
     text-align: center
     ellipsis()
    .icon-img
     position: absolute
     top: 0
     right: 0
     left: 0
     box-sizing: border-box
     padding: .1rem
     bottom: .44rem
     .icon-img-content
      height: 100%
      display: block
      margin: 0 auto
</style>
